A 39-year-old man presented with a 5-year history of a recurrent annular eruption that typically began on his calves, elbows, and thighs and then spread to involve his buttocks and trunk. The eruption spontaneously resolved without any treatment, but over time became more frequent.

Physical examination revealed widespread annular scaly lesions, some as large as 10 cm in diameter, on the trunk, buttocks, and limbs (Figure 1). The advancing border was slightly elevated, erythematous, scaly, and superficially eroded, while centrally the skin was hyperpigmented (Figure 2). Potassium hydroxide examination and bacterial culture of the lesions revealed no organisms.